var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var bannerRouter = require('./routes/banner');
var articleRouter = require('./routes/article');
var commentRouter = require('./routes/comment');
var adminRouter = require('./routes/admin');
var messageRouter = require('./routes/message');
var linkRouter = require('./routes/link');
var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));

// 在app.js文件中完成模板引擎的引入
var ejs = require('ejs');
// 配置Express 视图引擎
app.engine('html', ejs.__express);
app.set('view engine', 'html');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use('/banner', bannerRouter);
app.use('/article', articleRouter);
app.use('/comment', commentRouter);
app.use('/message', messageRouter);
app.use('/link', linkRouter);
app.use('/admin', adminRouter);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
